I recently bought an Octavia MK2 1.4 TSI, built October 2012, with 120.000km.  I know a big problem with this engine is the timing chain(+tensioner), which can break and mess up the entire engine. Reading the forum, I learned that a soon to fail chain will be rattling and be noisy at idle or when starting up a cold engine. I can't hear any rattling noises on my engine, but as this is the first 1.4 TSI I'm listening to, my observation is not too relevant. I definitely plan to check with a Skoda service if my chain needs to be replaced. Until then, I made a recording with a cold start of the engine: 

 

 

Does it sound healthy to you ?

Sounds OK. But noises are a late sign of stretched chains and failing tensioner. I'm not that familiar with your engine, you need to research and satisfy yourself how much of a problem it is. Ie frequency. Skoda dealers won't always know or play cards close to chest, even give bad advice in some cases on here. 

I have an appointment with the dealer on 2nd December. Is there a way they can tell the condition of the chain/tensioner without taking everything apart? The car seems to run and sound fine, but I like to be better safe than sorry (and poor).

I read in some places that 1.4 TSI's built after 2010/2012 have an improved chain / tensioner, which is much less likely to cause trouble. Unfortunately I didn't save the links.